Commitments and Contingencies - Narrative (Details) - USD ($)		1 Months Ended	12 Months Ended
	Feb. 05, 2016	Jul. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2014	Nov. 12, 2014	Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Initial term of lease			5 years 2 months
Extension term			5 years
Security deposit				$ 600,000				$ 400,000
Operating leases, rent expense, net			$ 2,800,000	1,500,000	$ 800,000
Remaining minimum purchase commitments			5,300,000
Legal Proceedings
Maximum contingent payments to be made upon exercise of option to acquire global rights of DIF program		$ 65,000,000.0
Maximum sales milestone payments upon achievement of annual sales milestone		250,000,000.0
Accrued expenses for clinical studies			10,600,000
Exposure for director and officer insurance policy			1,500,000
Sandoz Patent Infringement Lawsuit
Legal Proceedings
Period of time in during which a patent infringement suit can be filed in federal district court after receipt of the Paragraph IV certification (in years)	45 days
Minimum
Legal Proceedings
Annual sales milestone		100,000,000.0
Maximum
Legal Proceedings
Annual sales milestone		$ 900,000,000.0
Lumara Health
Commitments and Contingencies Disclosure [Abstract]
Security deposit			600,000	$ 600,000
Legal Proceedings
Additional merger consideration						$ 350,000,000	$ 350,000,000.0
Payments			$ 100,000,000